Subtract 12/28 from 3/90
3/90 - 12/28 is -83/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
3/90 = 3 × 14/90 × 14 = 42/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
12/28 = 12 × 45/28 × 45 = 540/1260 - Subtract the two like fractions:
42/1260 - 540/1260 = 42 - 540/1260 = -498/1260 - After reducing the fraction, the answer is -83/210
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